Table 4.
Spearman correlations (95%CI) of QIDS-SR 16 symptom domains with the CDSS total score
| QIDS-SR 16 domains | Correlation |
|---|---|
| Sleep disturbance | 0.22 (0.14-0.30) |
| Depressed (sad) mood | 0.46 (0.38-0.52) |
| Change in appetite or weight | 0.14 (0.07-0.22) |
| Concentration/decision making | 0.27 (0.19-0.34) |
| Self-view | 0.36 (0.28-0.43) |
| Suicidal ideation | 0.38 (0.31-0.45) |
| Interest | 0.33 (0.24-0.40) |
| Energy/fatigue | 0.28 (0.21-0.35) |
| Psychomotor agitation/retardation | 0.28 (0.20-0.35) |
Abbreviations: QIDS-SR 16 Quick Inventory of Depressive Symptoms 16-item self-report version; CDSS Calgary Depression Scale for Schizophrenia. All correlations were significant (p < .001).